New test with IR receiver/transmitter using sound card
Some tests have been performed using an Asus EEEPC 701 4G to both sample and play remote control signals.
EEEPC looks to have an high capabilities sound card, which allows sampling up to 154000 Hz; this allows properly sampling the original 38000 Hz carrier rather than just its presence/absence.
Standard audio card sampling:
Asus EEEPC sampling:
Using this sample, some tests hav been performed to determine if, how and when the EEEPC is capable of controlling the TV set which the remote belongs to.
Results are weird: ONE single LED appear to be enough to control the TV set, but NOT using the original sampled signal; instead, an artificial signal made out of a 19000 Hz tone and “mixed” into a stereo signal made up of inverted signals is needed to properly control the TV set.